TWI470495B - Touch-sensing subsrate, display panel, and patterned light-shielding layer - Google Patents

Description

Touch substrate, display panel and patterned shading layer

The present invention relates to a touch-sensing substrate, and more particularly to a touch substrate in which the fabrication of a touch line is integrated into the fabrication of a patterned light-shielding layer.

In order to make electronic products more user-friendly, many electronic products, such as Auto-Teller Machine (ATM), mobile phone, tablet PC, etc., have built-in touch panels. Make it easier for users to operate. In general, touch panels can be roughly classified into resistive, capacitive, infrared, and ultrasonic touch panels. Among them, resistive touch panels and capacitive touch panels are the most common products.

Taking a capacitive touch panel as an example, the sensing line including the X sensing series and the Y sensing series senses and determines the position touched by the user. In the conventional capacitive touch panel, the X sensing series and the Y sensing series are mostly made of antimony tin oxide or other transparent conductive materials, and the X sensing series and Y made of transparent conductive materials are used. Although there is a good light transmittance between the sensing series, the user still perceives the X sensing series and the Y sensing series outline when using the capacitive touch panel. Therefore, how to make the X sensing The serial and Y sensing series are not easily perceived by the user, and are one of the problems that the developer wants to solve. Under this trend, many practices have been proposed, but these conventional techniques can only reduce the X-sensing string. The column and Y sense the probability that the serial is perceived by the user, and the X-sensing string and the Y-sensing string are not completely avoided by the user.

The invention provides a touch substrate which has the functions of shading and touch simultaneously.

The invention further provides a display panel, which comprises the above touch substrate, wherein the patterned conductive layer capable of receiving the touch signal in the display panel is not easily perceived by the human eye.

The invention further provides a patterned light shielding layer, which has the functions of shading and touch simultaneously.

The invention provides a touch substrate, which comprises a substrate, a patterned conductive layer and a patterned insulating layer. The substrate has a surface, wherein the substrate has a plurality of first strip regions parallel to each other and a plurality of second strip regions parallel to each other, the first strip regions being interlaced with the second strip regions to define a plurality of senses The pad arrangement area, and the first strip-shaped areas and the second strip-shaped areas are located on the surface. The patterned conductive layer is disposed on the surface, wherein the patterned conductive layer comprises a plurality of mesh sensing pads disposed in the sensing pad arrangement region. The patterned insulating layer is disposed on the first strip region and the second strip region, wherein the patterned insulating layer and the patterned conductive layer are spliced into a patterned light shielding layer, wherein the patterned light shielding layer has a plurality of arrayed closed gaps. A portion of the closed gap is surrounded by the patterned conductive layer, and another portion of the closed gap is surrounded by the patterned conductive layer and the patterned insulating layer disposed on the first strip or the second strip.

The invention provides a display panel, which comprises the above touch The control substrate, the active device array substrate, and the display medium layer. The active device array substrate is opposite to the touch substrate, and the active device array substrate has a plurality of arrayed display regions and non-display regions outside the display regions, wherein the position of the patterned light shielding layer corresponds to the position of the non-display region, and The edge of the non-display area does not extend beyond the edge of the patterned shading layer. The display medium layer is disposed between the active device array substrate and the touch substrate.

The present invention provides a patterned light shielding layer suitable for being disposed on a surface of a substrate, the patterned light shielding layer comprising a patterned conductive layer and a patterned insulating layer. The patterned conductive layer is disposed on the surface of the substrate, wherein the patterned conductive layer comprises a plurality of mesh sensing pads disposed in the sensing pad arrangement region. The patterned insulating layer is disposed on the first strip-shaped region and the second strip-shaped region, wherein the patterned insulating layer and the patterned conductive layer are spliced into a patterned light-shielding layer, and the patterned light-shielding layer has a plurality of closed gaps, wherein a part of the closed The notch is surrounded by the patterned conductive layer, and the other portion of the closed notch is surrounded by the patterned conductive layer and the patterned insulating layer disposed on the first strip region or the second strip region.

In various embodiments of the present invention, the fabrication of the touch line is integrated in the fabrication of the patterned light-shielding layer, so that the user does not have to distinguish between the touch line and the patterned light-shielding layer, so the touch substrate and the display panel of the present invention Has a very good visual effect.

The above described features and advantages of the present invention will be more apparent from the following description.

[First Embodiment]

FIG. 1 is a schematic diagram of a touch substrate 100 according to an embodiment of the invention. The touch substrate 100 of the present embodiment may include a substrate 110, a patterned conductive layer 120, and a patterned insulating layer 130. The substrate 110 has a surface S, wherein the substrate 110 has a plurality of first strip regions R1 parallel to each other and a plurality of second strip regions R2 parallel to each other, and the first strip regions R1 are interlaced with the second strip regions R2 A plurality of sensing pad arrangement areas A are defined, and the first strip areas R1 and the second strip areas R2 are located on the surface S.

For example, the first strip region R1 is a strip region extending in the x direction, and the length of the first strip region R1 in the x direction is close to the length of the substrate 110 in the x direction, and the second strip region R2 The length of the second strip region R2 in the i direction is, for example, the length of the first strip region R1 in the x direction multiplied by cos θ, in order to extend the strip region extending in the i direction of the acute angle θ with the x direction. The first strip region R1 and the adjacent second strip region R2 define a sensing pad arrangement region A. In detail, the shape of the sensing pad arrangement area A is, for example, a right triangle T, the long side T-1 of the right triangle T is parallel to the x direction, and the long side T-1 side is close to the first strip area R1 in the x direction. In the upper length, the oblique side T-2 of the right triangle T is parallel to the i direction, and the side length of the oblique side T-2 is close to the length of the second strip region R2 in the i direction, and the long side T-1 and the oblique side T -2 clips an acute angle θ. However, the present invention is not limited thereto, and the shape of the sensing pad arrangement area A may be a polygon in other embodiments. In this embodiment, the substrate 110 can be a glass substrate, a plastic substrate, a printed circuit board or a display panel. The material of the substrate 110 can be glass, quartz, or organic. Polymer, or opaque/reflective materials (eg, conductive materials, wafers, ceramics, or other applicable materials), or other applicable materials.

The patterned conductive layer 120 is disposed on the surface S, wherein the patterned conductive layer 120 may include a plurality of mesh sensing pads P disposed in the sensing pad arrangement area A, and the mesh sensing pads P are electrically insulated from each other. These mesh sensing pads P are adapted to sense external touch signals to locate the touch locations. It is worth mentioning that the mesh sensing pad P is not a complete sensing pad, and the mesh sensing pad P may have a plurality of closed notches H and a plurality of open notches H1'. In other words, the patterned conductive layer 120 having a plurality of finely structured closed notches H and a plurality of open notches H1' is not easily noticeable to the human eye. In this embodiment, the patterned conductive layer 120 has the function of receiving the sensing signal and also has the function of blocking light. Therefore, the material of the patterned conductive layer 120 is preferably selected from materials having good light shielding property and conductivity. Metal materials such as metallic chromium (Cr), chromium oxide (CrOx), and the like.

The patterned insulating layer 130 is disposed on the first strip region R1 and the second strip region R2 , wherein the patterned insulating layer 130 and the patterned conductive layer 120 are spliced into the patterned light shielding layer 140 . The patterned light shielding layer 140 has a plurality of closed notches H, wherein a part of the closed notch H is surrounded by the patterned conductive layer 120, and another part of the closed notch H is formed by the patterned conductive layer 120 and disposed in the first strip region The patterned insulating layer 130 on R1 or the second strip region R2 is collectively surrounded.

In other words, the patterned insulating layer 130 is not a complete insulating layer, and the patterned insulating layer 130 may have a plurality of open notches H2'. Of course, the patterned insulating layer 130 may also have a plurality of closed notches H. It is worth mentioning that the openness is located in the first strip region R1 or the second strip region R2. The ports H2' are respectively connected to the open notches H1' in the adjacent patterned conductive layer 120, and are spliced into closed notches H. Further, the patterned light-shielding layer 140 formed by the patterned insulating layer 130 and the patterned conductive layer 120 having a light-shielding function is, for example, a mesh-shaped light-shielding layer having a plurality of arrays of closed notches H, the patterned light-shielding layer. The 140 may include a plurality of first portions 142 that are parallel to the x direction and a plurality of second portions 144 that are parallel to the y direction. The first portion 142 (or the second portion 144) is, for example, a partially patterned conductive layer. An elongated strip pattern formed by alternately connecting 120 and a portion of the patterned insulating layer 130. In this embodiment, the function of the patterned insulating layer 130 not only electrically insulates the respective mesh sensing pads P disposed in the sensing pad arrangement area A, but also has a function of shielding light. Therefore, the patterned insulating layer 130 is made of a material. The material is preferably made of a material having good insulating properties and light blocking properties. The material of the patterned insulating layer 130 may be a black insulating material such as black resin or other suitable insulating light shielding material.

In addition, it is worth mentioning that the plurality of closed notches H in the patterned light shielding layer 140 may be the same or different in size. In detail, the shape, size and arrangement of the closed notch H can be appropriately adjusted according to the actual design requirements.

FIG. 2 is a schematic diagram of a display panel 1000 according to an embodiment of the invention. The display panel 1000 of the present embodiment may include the touch substrate 100, the active device array substrate 200, and the display medium layer 300 of the present embodiment. The active device array substrate 200 is opposite to the touch substrate 100. The display medium layer 300 is disposed between the active device array substrate 200 and the touch substrate 100.

It is worth mentioning that the active device array substrate 200 has multiple arrays. The display area D and the non-display area I outside the display area, wherein the position of the patterned light shielding layer 140 corresponds to the position of the non-display area I, and the edge Ia of the non-display area I does not exceed the patterned light shielding layer 140. Edge 140-a. In other words, the patterned light shielding layer 140 can completely cover the non-display area I of the active device array substrate 200 and expose the display area D of the array substrate 200. That is to say, the touch substrate 100 including the patterned light shielding layer 140 has the same function as the black matrix, and at the same time has a function of sensing the touch position. In addition, the patterned light-shielding layer 140 (the patterned conductive layer 120 and the patterned insulating layer 130) having a function similar to that of the black matrix is fine in structure and is not noticeable to the human eye. It is to be noted that the size and shape of the closed notch H correspond to, for example, the sub-pixel PE (or pixel) on the active device array substrate 200.

[Second embodiment]

FIG. 3 is a schematic diagram of a touch substrate 100A according to a second embodiment of the present invention. The touch substrate 100A of the present embodiment may include a substrate 110, a patterned conductive layer 120, and a first patterned insulating layer 132. The substrate 110 has a surface S, wherein the substrate 110 has a plurality of third strip regions R3 parallel to each other and a plurality of fourth strip regions R4 parallel to each other, and the third strip regions R3 and the fourth strip regions R4 Interleaved to define a plurality of sensing pad arrangement areas A, and these third strip areas R3 and these fourth strip areas R4 are located on the surface S.

For example, the third strip-shaped region R3 is a strip-shaped region extending in the j-direction with a 45° angle with the x-direction, and the fourth strip-shaped region R4 is extended and A strip-shaped region in which the x-direction clip extends in the k direction of the 135° angle, and the third strip-shaped region R3 and the fourth strip-shaped region R4 define a plurality of sensing pad arrangement regions A. In this embodiment, the shape of the sensing pad arrangement area A is, for example, a diamond shape.

The patterned conductive layer 120 is disposed on the surface S, wherein the patterned conductive layer 120 includes a plurality of mesh sensing pads P disposed in the sensing pad arrangement area A and a plurality of first connected to the partial mesh sensing pads P Bridge the wire G1. In other words, the mesh sensing pads P partially arranged along the x direction are electrically connected through the plurality of first bridging wires G1 to form the first sensing series S1 extending in the x direction, and the other portions are mesh sensing. The pad P is electrically insulated from the first sensing series S1. It is worth mentioning that the mesh sensing pad P is not a complete sensing pad. In other words, the mesh sensing pad P may have a plurality of closed notches H and a plurality of open notches H1'.

The first patterned insulating layer 132 is disposed on the third strip-shaped region R3 and the fourth strip-shaped region R4, wherein the first patterned insulating layer 132 is connected to the patterned conductive layer 120 to be spliced into the patterned light-shielding layer 140, The patterned light shielding layer 140 has a plurality of closed notches H, wherein a part of the closed notch H is surrounded by the patterned conductive layer 120, and another part of the closed notch H is formed by the patterned conductive layer 120 and disposed in the third strip region. The first patterned insulating layer 132 on R3 or the fourth strip region R4 is collectively surrounded.

In other words, the first patterned insulating layer 132 is not a complete insulating layer, and the first patterned insulating layer 132 may have a plurality of open notches H2'. Of course, the patterned insulating layer 132 may also have a plurality of closed notches H. It is worth mentioning that the open notches H2' located in the third strip region R3 or the fourth strip region R4 are respectively connected to the open notches H1' in the adjacent patterned conductive layer 120, and are spliced into closed gaps. H. Further, by The patterned light-shielding layer 140 formed by splicing the first patterned insulating layer 132 and the patterned conductive layer 120 is, for example, a mesh-shaped light-shielding layer having a plurality of arrays of closed notches H, and the patterned light-shielding layer 140 may include a plurality of x The first portion 142 is parallel to the direction and the second portion 144 is parallel to the y direction. The first portion 142 (the second portion 144) is, for example, a partially patterned conductive layer 120 and a partially patterned insulating layer. 130 long strips formed by alternately connecting.

The touch substrate 100A of the present embodiment may further include a second patterned insulating layer 150 disposed on the patterned conductive layer 120 and covering at least the first bridge wire G1. In detail, the second patterned insulating layer 150 may include a plurality of island-shaped insulating blocks 152 respectively covering the first bridge wires G1. These island-shaped insulating blocks 152 preferably coincide with the first bridge wire G1 below it. The material of the island-shaped insulating block 152 may be a transparent insulating material or a light-shielding insulating material such as tantalum nitride (SiNx) or metallic chromium (Cr).

In addition, the touch substrate 100A of the present embodiment further includes a plurality of second bridging wires G2 disposed on the second patterned insulating layer 150 and electrically connected to the partial mesh sensing pads P. In detail, the mesh sensing pads P partially arranged along the y direction are electrically connected through the plurality of second bridge wires G2 to form a second sensing series S2 extending in the y direction, and the second sensing strings are Column S2 is electrically insulated from the first sense train S1.

FIG. 4 is a schematic diagram of a display panel 1000A according to an embodiment of the invention. The display panel 1000A of the present embodiment may include the touch substrate 100A, the active device array substrate 200, and the display medium layer 300 of the present embodiment. The active device array substrate 200 is opposed to the touch substrate 100A. Display medium layer 300 The device is disposed between the active device array substrate 200 and the touch substrate 100A.

It is worth mentioning that the active device array substrate 200 has a plurality of arrayed display regions D and non-display regions I located outside the display regions D, wherein the position of the patterned light shielding layer 140 corresponds to the position of the non-display region I. And the edge Ia of the non-display area I does not exceed the edge 140a of the patterned light shielding layer 140. In other words, the patterned light shielding layer 140 can completely cover the non-display area I of the active device array substrate 200 and expose the display area D of the array substrate 200. That is to say, the touch substrate 100A including the patterned light shielding layer 140 has a function similar to that of a black matrix, and at the same time has a function of sensing a touch position. Further, the patterned light-shielding layer 140 having a function similar to that of the black matrix is fine in structure and is not noticeable to the human eye. It is to be noted that the size and shape of the closed notch H correspond to, for example, the sub-pixel PE (or pixel) on the active device array substrate 200.

In summary, the touch substrate of the present invention has a sensing conductive layer integrated in the patterned light-shielding layer, so that the touch substrate of the present invention has a light-shielding function and also has a sensing touch. The function of touching the position. In addition, the patterned conductive layer with sensing function in the touch substrate is not easy to be perceived by the human eye.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

1000, 1000A‧‧‧ display panel

100, 100A‧‧‧ touch substrate

110‧‧‧Substrate

120‧‧‧ patterned conductive layer

130‧‧‧patterned insulation

132‧‧‧First patterned insulation

140‧‧‧ patterned shade layer

142‧‧‧ first part

144‧‧‧ second part

150‧‧‧Second patterned insulation

152‧‧‧ island-shaped insulating block

200‧‧‧Active component array substrate

300‧‧‧Display media layer

S‧‧‧ surface

R1, R2, R3, R4‧‧‧ strips

A‧‧‧Sense pad configuration area

x, y, i, j‧‧‧ directions

Θ‧‧‧ acute angle

T‧‧‧ right triangle

T-1‧‧‧right triangle long side

T-2‧‧‧ Right-angled triangle bevel

P‧‧‧Sense pad

H‧‧‧Closed gap

H1’, H2’‧‧‧Open gap

I‧‧‧non-display area

D‧‧‧ display area

G1, G2‧‧‧ bridge wires

S1, S2‧‧‧ Sensing series

PE‧‧‧Subpixel

FIG. 1 is a schematic diagram of a touch substrate according to a first embodiment of the present invention.

2 is a schematic view of a display panel according to a first embodiment of the present invention.

FIG. 3 is a schematic diagram of a touch substrate according to a second embodiment of the present invention.

4 is a schematic view of a display panel according to a second embodiment of the present invention.

100A‧‧‧ touch substrate

110‧‧‧Substrate

120‧‧‧ patterned conductive layer

132‧‧‧First patterned insulation

140‧‧‧ patterned shade layer

142‧‧‧ first part

144‧‧‧ second part

150‧‧‧Second patterned insulation

152‧‧‧ island-shaped insulating block

S‧‧‧ surface

R3, R4‧‧‧ strips

A‧‧‧Sense pad configuration area

x, y‧‧‧ direction

P‧‧‧Sense pad

H‧‧‧Closed gap

H1’, H2’‧‧‧Open gap

G1, G2‧‧‧ bridge wires

S1, S2‧‧‧ Sensing series

Claims (15)

A touch substrate includes: a substrate having a surface, wherein the substrate has a plurality of first strip regions parallel to each other and a plurality of second strip regions parallel to each other, the first strip regions and the The second strip regions are staggered to define a plurality of sensing pad arrangement regions, and the first strip regions and the second strip regions are located on the surface; a patterned conductive layer is disposed on the surface The patterned conductive layer includes a plurality of mesh sensing pads disposed in the sensing pad arrangement regions, and a patterned insulating layer disposed on the first strip regions and the second strip regions The patterned insulating layer and the patterned conductive layer are spliced into a patterned light shielding layer, and the patterned light shielding layer has a plurality of arrayed closed gaps, wherein a part of the closed gaps are surrounded by the patterned conductive layer. And the other part of the closed gap is surrounded by the patterned conductive layer and the patterned insulating layer disposed on the first strip regions or the second strip regions. The touch substrate of claim 1, wherein the material of the patterned insulating layer comprises a black insulating material. The touch substrate of claim 1, wherein the material of the patterned insulating layer comprises a black resin. The touch substrate of claim 1, wherein the material of the patterned conductive layer comprises a metal. The touch substrate of claim 1, wherein the patterned conductive layer further comprises a plurality of first bridges connected to the partial mesh sensing pads. wire. The touch substrate of claim 5, further comprising a second patterned insulating layer disposed on the patterned conductive layer and covering at least the first bridge wire. The touch substrate of claim 6, further comprising a plurality of second bridging wires disposed on the second patterned insulating layer and electrically connected to the partial mesh sensing pads. The touch substrate of claim 5, wherein the material of the patterned insulating layer comprises a black insulating material. The touch substrate of claim 5, wherein the material of the patterned insulating layer comprises a black resin. The touch substrate of claim 5, wherein the material of the patterned conductive layer comprises a metal. A display panel, comprising: the touch substrate according to claim 1 or 5; an active device array substrate facing the touch substrate, the active device array substrate having a plurality of array array displays And a non-display area outside the display area, wherein the position of the patterned light shielding layer corresponds to the position of the non-display area, and the edge of the non-display area does not exceed the edge of the patterned light shielding layer; and a display medium The layer is disposed between the active device array substrate and the touch substrate. A patterned light shielding layer is disposed on a surface of a substrate, wherein the substrate has a plurality of first strip regions parallel to each other and a plurality of second strip regions parallel to each other, the first strip regions With these The two strip regions are staggered to define a plurality of sensing pad arrangement regions, and the first strip regions and the second strip regions are located on the surface, the patterned light shielding layer comprises: a patterned conductive layer, the configuration On the surface of the substrate, wherein the patterned conductive layer comprises a plurality of mesh sensing pads disposed in the sensing pad arrangement regions; and a patterned insulating layer disposed on the first strip regions and the On the second strip-shaped region, the patterned insulating layer and the patterned conductive layer are spliced into the patterned light-shielding layer, the patterned light-shielding layer has a plurality of closed gaps, and a part of the closed gaps are patterned by the conductive The layer is surrounded by the patterned conductive layer and the patterned insulating layer disposed on the first strip regions or the second strip regions. The patterned light-shielding layer of claim 12, wherein the patterned conductive layer has a plurality of first bridging wires connected to the partial mesh sensing pads. The patterned light-shielding layer of claim 13 further comprising a second patterned insulating layer disposed on the patterned conductive layer and covering at least the first bridge wire. The patterned light-shielding layer of claim 14, further comprising a plurality of second bridging wires disposed on the second patterned insulating layer and electrically connected to the partial mesh sensing pads.